An act in which a male, usually one with a higher percentage of body fat and ample sized breasts, sneaks up upon an unsuspecting bystander and juts his Tat's in to the victims face while he growls in a primal manner with arms raised. This is not however exclusive to males. Females with ample breasts can also do it.

Ryan could not stop the relentless tat smacking he suffered on behalf of jimmy